Local anesthetic.



NA IHAN SULZISERGER, OF NEW YORK, N. Y.

LOCAL anns'rnn'rio.

No Drawing.

To all whom it may concern:

Be it known that I, NATHAN Sonznunona, a citizen of the United States, residing at Hotel Gotham, Fifty-fifth street and Fifth avenue, New York city, in the county of New York and State of New York, have inrented a new and useful Composition of Matter Containing the Ester of an Organic Acid .to be Used as a Local Anesthetic, of which the following is a specification.

It has been found that the esters of organic acids such as for instance ethyl ace tate, phenyl stearate, etc, are ideal solvents for drugs having soothing and anesthetic action, such as for instance, menthol, cocain, etc, such solutions still possessing anes thetic action. It has furthermore been found that such solutions can be keptfor 'very great lengths of time without deterioration-a decided advantage over solutions heretofore employed, especially for instance of cccain, which solutions heretofore employed lack keeping roperties and decompose readily Such econiposed solutions are not only 'very much less efiective but also carry-Winn them the danger of causing .an infection, when applied.

,As an example or one of these new preparations I cite the following: 10 parts'by weight of cocain are dissolved in 90 parts of phenyl acetate. This new product formsa Water white liquid of high analgesicand antiseptic properties, which latter are due to the high bactericidal value of the phenyl Specification 01' Letters Patent. Pategmtd Feb, 15, 1991M)... Application filed October 15, 1909.

Serial No. 522,775.

acetate, thereby adding to the analgesic value of cocain high antiseptic value, of

which antiseptic properties cocain, when "used alone, is almost entirely devoid. This slight percentage of adrenalin which is much used in connect-ion with cocain.

, I claim:

1. A product of the nature disclosed to be used as a local anesthetic, consisting in a solution of about 10% of cocain in the phenol-ester of an or anic acid.

2. A product 0 the nature disclosed to be used as a local anesthetic, consisting in a solution of cocain in phenyl acetate, having added thereto a very small percentage or adrenalin. c

, NATHAN SULZBERGER.

Witnesses:

A. F. Rare,

A. E. Parmesan. 

